Stop-motion for doubling and twisting machines.



R, S. REINHARDT.

. STOP MOTION FOR DOUBLING AND TWISTING MACHINES.

APPLIGATION TILED JUNE 4, '1909.

Patented May 24, I910.

ROBERT S. REINHARDT, 0F LINGOLNTON, NORTH CAROLINA.

STOP-MOTION FOR DOUBLING AND TWISTING MACHINES.

Specification of Letters Patent.

Patented May 24, 1910.

Application filed June 4, 1909. Serial No. 500,237.

To all whom it may concern:

Be it known that I, ROBERT S. REINHARDT, a citizen of the United States, residing at Lincolnton, in the county of Lincoln and State of North Carolina, have invented a new and useful Stop-Motion for Doubling and Twisting Machines, of which the following is a specification.

This invention has reference to'improvements in stop motions for doubling and twisting machines and is designed to provide a means for preventing waste on twisters when making two or more ply yarns.

In accordance with the present invention there is provided a stud and eccentric coacting therewith and between which stud and eccentric the threads pass to the drawing rolls but before reaching the rolls and before passing between the stud and eccentric the threads pass through eyes formed in guide wires in such manner that should a thread break the guide wire will move to a position to cause the actuation of the eccentric in a manner to grip all the threads thus prevent ing them from passing on and making waste. Furthermore,the invention provides a means for preventing the making of any waste or doublings when threads break from any cause between the roller and bobbin slack band or from the band breaking off or the traveler flying off, as sometimes happens.

The invention will be best understood from a consideration of the following detail description taken in connection with the accompanying drawings forming a part of this specification in which drawings,

Figure 1 is a side elevation of the stop motion mechanism in operative position. Fig. 2 is a view partly in section and partly in elevation, and 011 a larger scale than Fig. 1, of the stop motion mechanism and showing in dotted lines the positions assumed on the breaking of a thread. Fig. 3 is a plan view of the structure shown in Fig. 2.

Referring to the drawings there is shown a post or standard 1, formed at one end into a clamp 2 adapted to be made fast to a por: tion of the support or stand 3 carrying the usual drawing rollers 4.

Near the free end the standard 1 is provided with a longitudinal slot 5 through which is passed the stem of a pin 6 projecting from one side of the standard 1 and clamped thereto in any desired position of adjustment by means of a clamp nut 7 applied to the stem of the pin 6. At a point on Projecting from the standard 1 on the same side thereof but in spaced relation to the spindle 8 is an arbor 11 upon which is mounted a number of collars 12, each collar being provided with a radial tooth 13 adapted to engage the wing or shoulder 10 of the cam 9 under conditions which will presently be referred to, and each collar has secured thereto at a point about 90 displaced with relation to the tooth 13 a radially projecting rod or wire 14 bent into a return loop 17 at substantially right angles to the body of the wire 14 and the return portion of the loop is extended beyond the body portion of the wire 14 in a direction opposite the loop to about the same extent as the loop. This return portion terminates in an eye 16 in the form of a helix so that a thread may be readily passed therethrough at any point on the thread and the thread will be held in the eye without danger of escape therefrom. In the showing of the drawings there are three such rods or wires 14 thus adapting the device to three-ply yarns, but of course two-ply yarns may be made with the same device. When a greater number of strands are used in the yarn then more of the rods or wires 14 with the eyes 16 will be supplied, and each rod or wire 14 Will be carried by a collar 12 individual thereto. The rods or wires 14 with their eyes 16 and collars 12 constitute creel drop wires and are all alike.

Carried by the spindle 8 on the end thereof remote from that carrying the cam 9 is a wire 17 appropriately bent to extend at one end across the path of the creel wires 14, as indicated at 18, while the other end of the wire 17 is bent on itself to form a guide 19 for the strands coming through the loops or eyes 16 and passing to the space between the pin 6 and cam 9.

The arbor 12 is sufficiently long to not only carry the collars 12 but to carry an additional collar 20 outsidethe collars 12 and this collar is provided with a finger 21 adapted under certain circumstances to engage the shoulder or wing 10 the same as the fingers 18 of the collars 12. The collar 20 is provided with a radially extending arm 22 pro ject-ing in substantially the same direction as do the creel wires 14: and at the outer end this arm carries another wire 23 appropriately bent and having its free end projecting in a direction opposite the direction of projection of the creel wires 14. The free end of the wire 23 is formed into an eye 24 by twisting the end of the wire into a short helix so that the thread may be readily introduced into the eye and will be retained therein, and this eye is disposed in the path of the thread after having passed the drawing rollers and on its way to the traveler. The wire 23 with its eye 24 constitutes the front preventive doubling wire.

Considering that the yarn is to be made three-ply then the strands are led through the eyes 16 of the three creel drop wires 14 and from thence through the guide wire 19 to the space between the cam 9 and the pin 6, the cam 9 normally gravitating to a position leaving a space between the said cam and the pin 6 for the passage of the strands without cramping. From this point the strands are led between the drawing rolls 4 and thence through the eye 24 of the front preventive doubling wire 23 and from thence to the twisting mechanism, which latter being of ordinary construction need not be further considered. The tension of the strands passin through the eyes 16 and their direction of travel will cause the elevation of the creel drop wires to an extent suflicient to move the fingers 13 away from the shoulder or wing 10 of the cam 9, this upward movement being arrested by the extension 18 of the wire 17 The tension and direction of travel of the strands after leaving the rollers 1 on their way to the twisting mechanism is such as to raise the arm 22 carried by the collar 20 so as to bring the tongue 21 away from the wing or shoulder 10 of the cam 9.

These are the ordinary working conditions of the device and so long as normal conditions prevail in the doubling and twisting machine the members making up the structure of this invention remain inactive. Should however one of the strands passing through the eye 16 of a creel drop wire 1 1 break then such wire will immediately ravitate to a lower position bringing the finger 13 against the wing or shoulder 10 of the cam 9 and turning the latter on the spindle 8 until it clamps all the threads against the pin 6 thus preventing further movement of the threads or strands and the consequent formation of waste.

Should the thread break, from any cause, between the rollers and the bobbin slack band, or should the band break off, or should the traveler fly off, then the front preventive guide wire is released and the weight of the arm 22 will immediately move the collar 20 to bring the tooth 21 against the wing or shoulder 10 and cause the clamping of the strands.

It will be observed that the cam or clamp block 9 has a normal tendency to move in a direction to carry its engaging surface away from the pin 6 and it is only when the cam or clamp block 9 is moved positively by the dropping of a creel wire let or of the arm 22 that the cam is moved into position to clamp the threads against the pin 6.

What is claimed is 1. In a device of the character described, a clamp common to all the strands, single clamp operating means individual to and controlled by the strands, and another clamp operating means controlled by the strands collectively.

2. In a device of the character described, a single engaging means common to all the strands and tending normally to the inactive position, creel drop wires individual to and controlled by the strands, and a front preventive guide wire controlled by the strands collectively, said creel drop wires and the front guide wire acting, when released from the control of the strands, to move the common engaging means to active position, each independently of the others.

3. In a device of the character described, a clamp common to all the strands and tending normally to the inactive position, creel drop wires each held by a strand in inactive position and each, when released from the control of the strand, engaging the clamp and moving it to active position to all the strands, and a front preventive guide wire held in inactive position by all the strands collectively and movable when released to actuate the clamp to active position.

4. In a device of the character described, a normally fixed member, a cam movable into and out of operative relation to the normally fixed member and normally tending to inactive position, members individually active to the cam and each carrying a creel drop wire, another member active to the cam and a front preventive guide wire carried by said last named member.

5. In a device of the character described, a suitable support, a cam member mounted thereon and having a normal tendency to inactive position, a pin coacting with the cam member to constitute a clamp and adjustable to and from said cam member, and creel wires individually movable into engagement with the cam member to move the latter to active position with relation to the pin, said creel wires being adapted to be under the normal control of the strands to be twisted.

6. In a device of the character described, a suitable support, means for attaching the support to a doubling and twisting machine, a cam carried by the support and having a normal tendency to inactive position, a pin coacting With the cam to constitute a clamp and adjustable to and from said cam, collars carried by said support and each provided with a member adapted to engage the cam, creel Wires one for each collar, and another collar carried by the support and adapted to engage the cam, and a front preventive guide Wire carried by the last named collar.

In testimony that I claim the foregoing 15 as my own, I have hereto affixed my signature in the presence of two Witnesses.

ROBERT S. REINHARDT.

Witnesses:

F. L. HOFFMAN, V. E. REINHARDT. 

